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Java 9: Building Robust Modular Applications
book

Java 9: Building Robust Modular Applications

by Dr. Edward Lavieri, Peter Verhas, Jason Lee
April 2018
Intermediate to advanced content levelIntermediate to advanced
910 pages
33h 21m
English
Packt Publishing
Content preview from Java 9: Building Robust Modular Applications

Package checking algorithm

Java 9's final performance improvement when running applications with a security manager installed, came in the form of the java.lang.SecurityManager package enhancements. Specifically, the checkPackageAccess method's package checking algorithm was modified.

The java.lang.SecurityManager class allows applications to implement security policy on specific operations. The public void checkPackageAccess(String pkg) method, of this class receives a comma-delimited list of restricted packages from the the getProperty method. As illustrated here, depending on the evaluation, the checkPackageAccess method can throw one of two exceptions:

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Publisher Resources

ISBN: 9781788832823Supplemental ContentOtherPurchase LinkErrata Page